Means for locking doors



J. IMBER MEANS Fon LOCKING D'ooRs Filed Jan.14. 192e Jan. 3l, 1928.

Patented Jan. 3i, reas. i lli'ltlti llrll'l'l) STATES PATENT JACK innen, or LONDON, ENGLAND.

MEANS non nocrzrne'noons.

Application filed January 14, 1926. Serial No. 81,208.

'lhisl invei'it-ion relates to means tor lock terior ol the. vehicle and a lever operable ing the doors ci automobile vehicles, railtroni the interior of the vehicle are proway carriages and the like and has tor its vided but the bolt is only maintained in the object the provision oi an improved conretracted position Jlor as long as either of 6 1" struction and arrangement designed to enthe operating ineinbers is held in the necessure positive engagementv ci the locking desary position. ln addition to the nieinbers vices when a door is closed7 to prevent ratc and j? a lreyoperated device be protle, to prevent opening oi' a door by vibran vided to loclr the bolt a in the operative tion and to provide a locking mechanism position shown in Figure l. o5

"l which will compensate automatically for The outer end ot the bolt a. is ot a cy- Wear of interengaing parts and for lindrical forni and is provided with a coniivarping and other causes liable to effect Cal or other forni ot tapered recess g, the relative displacements between aldoor and outer ec ge oit the bolt being rounded as its mounting or framework. SllOWB at 7L to ioll'n part ot ak continuous 70 5 According to the invention, a lock t'or curved surface between the cylindrical poi-- doors and 'the like is provided Comprising 'tion of the. bolt and the interior O the reliired and movable eleinents disengaged cess y.' Then the door CZ is closed the bolt when a door' is open and each formed with cb Cri-Operates Vwith a striking plate i torni/d cin-ved or inclined surfaces so arranged that or provided with peri'orated lugs j by means f5 l the movable element centres itself autoinatiot' Which the striking plate is fixed in posically 'within the tired element when thc door tion on the end of the vehicle trarne or body is closed. ,ltccording to the preierred torni 7s against which. the edge ol' the door d abuts oli th Arivention a bolt carried by a door is when closed. The outer. portion oi the :torined with a curved and recessed end porstriking plate terminates in a sharp edge Z G0 tion adapted to engage under spring presbeyond Which extends an outwardly inclined sure,` when the door is closed, in an annular portion m beyondvvhich lies an outwardlyv soclret having a central tapered projection curved surface n. leading to a :dat portion o adapted to fit the recess in the bolt. in which .is :torined a socket p, the centre lle-terence will now be inade to the acconiol` which is provided With a tapering pro- 85 fl pai/lying drawings which illustrate by Way jection g adapted to litinto the recess g in of example a construction according to th the bolt a. y I

invention and in Whichz- The operation of the device above de- Figure l is a side elevation ot the lock, scribed is as follows?- Figure 2 is an elevation of the striking When the door al is inoved towards closed 'm ulate, position the outer end of the bolt c cornes Figure 3 is a sectional plan showing the into engagement with the edge Zot thestrilc position ot the bolt when the door is partly ing plate, the spacing oi which troni the closed and plate c is sutlicient to allow the end of the Figure l is a sectional plan showing the bolt to ride over the edge Z onto the inclined of position ot the parts when the door is cono portion m7 this operation being` aided by the pletely closed. curved edge It ot the bolt. Continued pres- The construction illustrated is intended sure on the door causes the end ot the bolt to more particularly for application to the door travel along the inclined portion fm, as shown ol an automobile vehicle and comprises a in Figure 3 and over the curved portion a, 100

bolt o, 'forming part of a lock mechanism oit the bolt meanwhile yielding inwardly (that any suitable type enclosed Within a casing l) towards the right, Figures l, 3 and ll) having at one end a perforated plate c by against the action of its spring until the which the locl: can be attached to the edge bolt is brought into axial alignment with the or a door ol (Figure 3) in the usual inanner. socket p into engagement with which the 105 'lhe bolt a is normally maintained in the bolt is forced owing to the spring being tree position shown in Figures l and 3 by ineens to expand when the bolt reaches the posiv ot a spring (not shown) against the action tion shown in Figures. As the bolt nieves ot which the bolt may yield inwardly dur outwardly its recess g is engaged by the proing opening and closing ot the door. For jection g and should the bolt have deviated il the purpose oi'lretracting the bolt a to open troni its correct position through any cause the door handle c operable from the eX- it is centred automatically bythe projection g operating in conjunction with the pres- -sure exerted by the spring.

To ensure that the bolt makes 'Full engage nient with the fixed socket the devices fihore 5 described are so proportioned that the distance between the outer end ot thebolt d and the plate e when the door is open is` greater than the distance between the base of the socket j) end the plate e when the door is 1o closed. Willen, therefore, the parts are .in therelative positions shown in Figure` t the bolt maintained by the spring in oloee engagement with the socket thus prevent in.;r Vrattling of the door when Closed. By loproportioning the ports in the manner described `the spring is also enabled to operate to compensate for weer on the interengaging surfaces of the holt and socket Whilst as a-'further provieion for suoli Wear, the bolt may be proportioned so that when lirst put into use it Will not quite rezielr to the buse ofthe socket Whenthe ports are in the position shownA in Figure Ll.

It is preferred that" the bolt and socket should he designed ini` such a manner that the angle made by the engaging sur'lzieee ot the socket g and projection (j with the axle of the bolt a, Whether the bolt is completely cent-red or not7 will be less than t5 degrees, thus ensuring that they door will be posi tively fastened in closed position by the bolt in all conditions, but this angle must not be small enough to allow the projection gg to become tightly wedged inthe socket g.

It will be understoodthat the invention is niet limited to the particular application above deseribedfbut may be :ippliod: to` any door or closure adapted to. be fastened by means of e sliding bolt. 40 of' construction other than that described with reference to the drawings, but provid,

lvloreover, forms.

plate haring :i soeltet into rrhirh riaiil boil i5 spriiigijnw rind centering' unione iu eaiiil plete socket tor .void bolti` the outer editer-g of the bolt eoelretnnd o'l the bolt i r roundod` to facilitate engorgement with said strikiinff` plete and its seeker.

2. fr lock, for deo 1; :ind the like eoinpi" iup; :1 moilahle bolt on the door ol. offline eal forni and provided with :i .sorliet :it the outer end, andi a .fixed strilrfnir pluie Ioi'iiied with curved surfeurs and with uit uuniilijrr Wl sot-liet7 the renier oi' u'hioli luie zi reporting projection adopted lo enter the riiaelnrt et seid holt when the door ie closed.

o. ,fi look for doors sind the like eenipriis'q ingr a c i'liiulriealbolt slidahly mounted, in :i ll door and urged oufilwzirdljii by :i fsprii1j :i tapered rec, termed in the oud ot iid bolt, :i .tiered et ilrinr;r plate hriving eurrilrifi snrlaies adapted to press the bolt irrwririiiljr as the door isrnioved towurde el posit ion and having;1 onV annuler ooeliot i rrrminding; a tapered projection sidzipivd: to een ihr:

holt autoinzitimillji as the door reaches fr, position when tliespring fori looking engegeinentwith tl y In Witness whereof I, ailii; ini arturo,"

Jziioirfmonili; 

